Here's the new thread for posting quotes, with the usual rules:
- Please post all quotes separately, so that they can be voted up/down separately. (If they are strongly related, reply to your own comments. If strongly ordered, then go ahead and post them together.)
- Do not quote yourself.
- Do not quote comments/posts on LW/OB.
- No more than 5 quotes per person per monthly thread, please.
To a large extent it already has. Humans are much more peaceful now than they have been in the past. This is part of a large set of broad trends. See Pinker's excellent "The Better Angels of Our Nature". At this point, I'm not sure this quote is really accurate.